Is AD 2015-05571 a recurring Airworthiness Directive?

No — AD 2015-05571 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2015-05571 apply to?

AD 2015-05571 applies to Bell Helicopter Textron Canada — models 407. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2015-05571

one-time

AD 2015-05571 · 2015-03-16 · airframe

Airworthiness Directives; Bell Helicopter Textron Canada Helicopters

What this AD requires

We are adopting a new airworthiness directive (AD) for Bell Helicopter Textron Canada (BHTC) Model 407 helicopters. This AD requires inspecting the aft fuselage upper skin (upper skin) for a crack and the upper left longeron assembly (longeron assembly) for a crack, corrosion, or defect. This AD requires replacing or repairing a part or section, depending on the inspection's outcome. This AD was prompted by reports of cracks in the upper left-hand longeron. This AD's actions are intended to prevent failure of the longeron assembly or the upper skin, which could lead to a structural failure and loss of helicopter control.

Which aircraft AD 2015-05571 applies to

MakesBell Helicopter Textron Canada

Models407

Serial-conditional — narrows to serials 53000–53900, 53911–54061, 54300–54300.

Part-conditional — 206-031-314-037, 206-031-314-177, 206-031-314-219B.

Applies only to helicopters within the specified serial number ranges with the specified upper left longeron assembly part number installed.

Whether AD 2015-05571 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.

How AD compliance is recorded

A valid compliance record (14 CFR 43.9) states:

Method of compliance — The specific action taken (inspected, replaced, modified) and to what revision.

Date — When the work was done.

Aircraft time — Total time in service / tach at compliance — how recurring next-due is computed.

Signature & certificate — The A&P/IA who returned it to service, with certificate number.

Is AD 2015-05571 complied with on your aircraft?

Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.

Look up a tail number →Read the full directive (Federal Register)

Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.